If your membership is paid via PayPal, you can cancel using the following steps…
Your account subscription is securely managed with PayPal, To cancel you need to go to your PayPal account and cancel the recurring payment, there are some instructions here: https://www.paypal.com/selfhelp/article/How-do-I-cancel-an-automatic-payment-I-have-with-a-merchant-FAQ2058/6
For ease I’ve included those instructions below:
Currently this has to be done manually from a member of staff, send us a support ticket here and request for a cancellation. We’ll cancel the subscription as soon as we can.
If a payment goes out after you’ve sent the request but before we’ve seen the ticket, we’ll refund the transaction.
Any one-time payments on card, paypal or CS:GO Keys will automatically expire when the time is up. You won’t need to do anything.